Unit 5 She Helps Me a Lot（易错题专项练习·语法提升）英语教科版四年级上册（新教材)

Unit 5 She Helps Me a Lot

专题02 语法提升·易错题专项训练

描述他人时的第三人称单数与四个常用句式

1. 描述“他/她”时主语是第三人称单数，一般现在时动词要加 -s / -es：smile→smiles，help→helps，like→likes，cheer→cheers，hold→holds，work→works，get→gets，say→says。

2. 教材四个常用句式：He/She is + 形容词（She is kind. / Alice is so nice.）；He/She likes to + 动词原形（She likes to give a helping hand.）；He/She (always) + 三单动词（She always says nice things.）；He/She is always ready to + 动词原形（She is always ready to help.）。

3. be 动词与实义动词不能同时作谓语：不能说 She is likes to help.

4. always 的位置：实义动词前（She always cheers me up.）；be 动词后（She is always ready to help.）。

5. 主语是 I / we / they 时，动词用原形：They like to help others. / We work hard.

◆ 主语是第三人称单数，动词要加 -s。

✗ 错误：She like to help others.

✓ 正确：She likes to help others.

◆ be 动词和实义动词不能叠用。

✗ 错误：She is likes to give a helping hand.

✓ 正确：She likes to give a helping hand.

◆ always 后的实义动词同样要加 -s。

✗ 错误：He always help his friends.

✓ 正确：He always helps his friends.

◆ be ready to 后接动词原形，不能再加 -s。

✗ 错误：She is always ready to helps.

✓ 正确：She is always ready to help.

◆ always 放 be 动词后面，不放前面。

✗ 错误：She always is ready to help.

✓ 正确：She is always ready to help.

一、单项选择

(     )1. She ______ to give a helping hand.

A. like                  B. likes              C. liking

(     )2. He always ______ at people.

A. smile                B. smiles             C. smiling

(     )3. They ______ to help others.

A. likes                B. like                C. is like

(     )4. Alice ______ kind to us.

A. are                 B. is                  C. be

(     )5. She is always ready ______ others.

A. help                B. helps                C. to help

二、用所给词的适当形式填空

1. Mutin ______ (be) kind.

2. She ______ (like) to give a helping hand.

3. He ______ (cheer) me up when I'm sad.

4. We ______ (work) hard at school.

5. My friend ______ (hold) the door open for others.

点拨 一、 1．B　[解析] 主语 She 是第三人称单数，like 加 -s，故选 B。 2．B　[解析] 主语 He 是第三人称单数，smile 加 -s，故选 B。 3．B　[解析] 主语 They 是复数，动词用原形 like，故选 B。 4．B　[解析] 主语 Alice 是单数，be 动词用 is，故选 B。 5．C　[解析] be ready to 后接动词原形 help，故选 C。 二、 1．is　[解析] 主语 Mutin 是单数，be 动词用 is。 2．likes　[解析] likes to + 动词原形，-s 加在 like 上。 3．cheers　[解析] 主语 He 是第三人称单数，cheer 加 -s。 4．work　[解析] 主语 We 是复数，动词用原形。 5．holds　[解析] 主语 My friend 是第三人称单数，hold 加 -s。

宾格代词与形容词性物主代词

1. 动词或介词后面作宾语，要用宾格：me, you, him, her, us, them。例：She helps me a lot. / You cheer me up! / Come and join us.

2. 名词前面表示“谁的”，用形容词性物主代词：my, your, his, her, our, their。例：She helps me with my homework. / He cheers up his friends.

3. 主格不能作宾语：不能说 She helps I.。

4. her 既可是宾格也可是物主代词：helps her（宾格“她”）；her classmates（“她的”同学）。

5. 描述他人时，主语 he / she 对应 his / her：He is kind. He helps his classmates.

◆ 动词后用宾格，不用主格。

✗ 错误：She helps I a lot.

✓ 正确：She helps me a lot.

2. Let ______ (I) help you.

3. ______ (she) always smiles at people.

4. He likes to help ______ (he) classmates.

5. ______ (we) are good friends.

点拨 一、 1．B　[解析] helps 后作宾语用宾格 me，故选 B。 2．B　[解析] 修饰名词 friends 用物主代词 his，故选 B。 3．B　[解析] join 后作宾语用宾格 us，故选 B。 4．C　[解析] 修饰名词 homework 用 my，故选 C。 5．B　[解析] 介词 to 后作宾语用宾格 us，故选 B。 二、 1．she　[解析] 从句主语位置用主格 she。 2．me　[解析] Let 后接宾格 me。 3．She　[解析] 句首作主语用主格 She，首字母大写。 4．his　[解析] 修饰 classmates 用物主代词 his。 5．We　[解析] 句首作主语用主格 We，首字母大写。

举例与并列信息的表达（For example / When… / also / and）

1. 举例支持观点用 For example, …：For example, she likes to give a helping hand.

2. 说明“当……的时候”，用 When + 从句：When his friends are sad, he cheers them up. / When I'm sad, she cheers me up.

3. 补充信息用 also，位置在实义动词前、be 动词后：He also helps clean up. / He is also ready to help.

4. 并列两个信息用 and，and 前后的动词形式要与同一主语保持一致：She always says nice things and gets on well with everyone.

5. and 后省略主语时，动词仍按前面的主语变形，照样加 -s。